diff --git a/.github/workflows/test.yaml b/.github/workflows/test.yaml
index 376ba72..702bbdc 100644
--- a/.github/workflows/test.yaml
+++ b/.github/workflows/test.yaml
@@ -10,7 +10,7 @@ on:
 
 env:
   # Upload coverage only for this go version.
-  LATEST_GO_VERSION: "1.20"
+  LATEST_GO_VERSION: "1.21"
 
 jobs:
   test:
@@ -23,7 +23,7 @@ jobs:
     strategy:
       matrix:
         os: ["ubuntu-latest"]
-        go: ["1.18", "1.19", "1.20"]
+        go: ["1.18", "1.19", "1.20", "1.21"]
 
     name: ${{ matrix.os }} & Go ${{ matrix.go }}
 
diff --git a/go.mod b/go.mod
index 2a11642..5ef2a59 100644
--- a/go.mod
+++ b/go.mod
@@ -1,6 +1,6 @@
 module github.com/mojixcoder/gosrm
 
-go 1.20
+go 1.21
 
 require github.com/stretchr/testify v1.8.2
 
diff --git a/types.go b/types.go
index e1a3b9f..693c262 100644
--- a/types.go
+++ b/types.go
@@ -287,3 +287,8 @@ type (
 		Confidence float32 `json:"confidence"`
 	}
 )
+
+// IsOk returns true if request could be processed as expected by OSRM.
+func (res Response) IsOk() bool {
+	return res.Code == CodeOK
+}
diff --git a/types_test.go b/types_test.go
new file mode 100644
index 0000000..33b82eb
--- /dev/null
+++ b/types_test.go
@@ -0,0 +1,15 @@
+package gosrm
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestResponse_IsOk(t *testing.T) {
+	res := Response{Code: CodeOK}
+	assert.True(t, res.IsOk())
+
+	res.Code = CodeInvalidQuery
+	assert.False(t, res.IsOk())
+}